I have made a elastic band guitar with four thick elastic bands. What are two things I could do to change the pitch on the elastic band guitar?
You could change the thickness, length, or tension of the elastic bands.
100
Where is the pinna? What does it do?
- The outer section of the ear
- Catches sound waves into the ear
100
How does a megaphone work?
- It amplifies sound
- It directs the sound in one direction
100
How is sound made?
Sound is caused by the vibration of an object.
100
What are some sounds that can damage our hearing?
-Plane taking off
-Concerts
-Construction machines
200
Kyle has a number of bells that are different sizes. What would the speed of the vibration be when Kyle played the largest bell? (Bonus: What would the pitch be?)
It would be slow vibration. (Bonus: Low pitch!)
200
Where is the eardrum? What is the point of the eardrum?
The point of the eardrum is to make it vibrate. The vibrations pass through three bones of the inner ear.
200
Mrs. Wilson's class tested how sound travels. Through which pf the following objects would you not expect sound to travel?
A) table and pictures
B) curtains and carpeting
C) Wood chairs and rough walls
D) Wood floor and plaster ceiling
B) curtains and carpeting
200
One student is 25m away from the teacher. Another student is 50m away. Each is told to yell as loud as they can. What problem is being tested?
A) Do twins have loud voices?
B) Does sound travel better on a hilly playground?
C) Is it harder to hear someone as distance increases?
D) Does wind make it hard to hear someone far away?
C) Is it harder to hear someone as distance increases?
200
What are some ways you can prevent damage to your ears?
- Wear hearing protection
- Limit exposure to harmful sounds
300
David learned that sound is a result of vibrations and the faster the vibration
a. the lower the pitch
b. the higher the pitch
c. the softer the sound
d. the louder the sound
b. the higher the pitch
300
What makes up the inner ear?
- Hammer, stirrup and anvil
300
Sound waves travel faster in:
a) Water
b) Air at room temperature
c) Space
d) Steel
D - Steel!
300
How do we measure sound?
We use a sound meter and the sound meter measures the sound in decibels.
300
Mr. Hill has a tuning fork, a rock, a large bowl, water, and a pencil. What could Mr. Hill do with these items to show how vibrations travel?
- Striking the tuning fork and placing it in the water
400
Which of the sounds below would cause hearing damage?
a) Whisper
b) Rock Concert
c) Conversation
d) Chain Saw
B and D
400
What part of the ear carries a message about the sound to the brain?
- Auditory nerve
400
What materials will make the quietest classroom possible?
A) Rough walls and carpeting
B) Smooth walls and carpeting
C) Rough walls and no carpeting
D) Smooth walls and no carpeting
A) Rough walls and carpeting
400
Mr. Hill's dad works at a nuclear power plant where there are extremely loud generators. Mr. Hill brought his dad's ear muffs to show the class. What would happen if his dad didn't wear them to work?
- Suffer from ear damage and hearing loss
- Long exposure to extremely loud sounds can cause hearing damage
400
Craig is hard of hearing. What could the teacher and students do to help Craig learn?
- Sign language
- Body language
- Lip Reading
- Pointing
500
When using a elastic guitar, what would happen to the pitch if:
1) You changed the size of the box
2) You used a shorter elastic band
1) Lower pitch
2) Higher pitch
500
How does the ear work?
Sound waves enter the ear canal and make the ear drum vibrate. This action moves the tiny chain of bones in the middle ear. The last bone in this chain ‘knocks’ on the membrane window of the cochlea and makes the fluid in the cochlea move. The fluid movement then triggers a response in the hearing nerve.
500
If you had to block a sound, what material would you use?
a. soil
b. sawdust
c. styrofoam
d. concrete
c. styrofoam
500
Does ear size help animals hear better? How do you know?
It can, but not always. When it does: rabbits, deer. When it does not: bats, elephant.